Title
Validation and Parameter Sensitivity Tests for Reconstructing Swell Field Based on an Ensemble Kalman Filter.
Abstract
The swell propagation model built on geometric optics is known to work well when simulating radiated swells from a far located storm. Based on this simple approximation, satellites have acquired plenty of large samples on basin-traversing swells induced by fierce storms situated in mid-latitudes. How to routinely reconstruct swell fields with these irregularly sampled observations from space via known swell propagation principle requires more examination. In this study, we apply 3-h interval pseudo SAR observations in the ensemble Kalman filter (EnKF) to reconstruct a swell field in ocean basin, and compare it with buoy swell partitions and polynomial regression results. As validated against in situ measurements, EnKF works well in terms of spatial-temporal consistency in far-field swell propagation scenarios. Using this framework, we further address the influence of EnKF parameters, and perform a sensitivity analysis to evaluate estimations made under different sets of parameters. Such analysis is of key interest with respect to future multiple-source routinely recorded swell field data. Satellite-derived swell data can serve as a valuable complementary dataset to in situ or wave re-analysis datasets.
Year
DOI
Venue
2016
10.3390/s16122000
SENSORS
Keywords
Field
DocType
pseudo SAR observation,EnKF,swell field reconstruction,parameter sensitivity
Data mining,Buoy,Satellite,Field data,Remote sensing,Polynomial regression,Storm,Electronic engineering,Geometrical optics,Engineering,Swell,Ensemble Kalman filter
Journal
Volume
Issue
Citations 
16
12.0
0
PageRank 
References 
Authors
0.34
0
6
Name
Order
Citations
PageRank
Xuan Wang100.34
Pierre Tandeo233.79
Ronan Fablet331247.04
Romain Husson400.34
Lei Guan523.79
Ge Chen655.31